exercises done, mostly by young female college students, for what appears to be for the sole pupose of improving sexual prowess and tend to resemble the act of coitus. Most exercizes that work the inner thigh or buttocks can be considered sexercises.

Man #1: Dear god, what is she doing to that machine in the middle of the gym?
Man #2: Don't worry man, she is just doing her sexercises
Man #1: Oh....I got to get my girlfriend on that workout program

Hyper energetic and prolonged copulation that with repetition counts as a full cardio vascular workout regime leading to increased aerobic capacity and six pack abdomen which in turn leads to more workout opportunities.....
Yummy mummy's eschew gym membership in favour of sexercising their way to health.

"You're quite pretty love but that crop top is showing up your muffin rolls. How about I help you with a bit of sexercise to burn off some of that love flubber?"